---
title: "POST /projects/{project}/zones/{zone}/instanceGroups/{instanceGroup}/addInstances"
method: POST
path: "/projects/{project}/zones/{zone}/instanceGroups/{instanceGroup}/addInstances"
tags: ["instanceGroups"]
---

# POST /projects/{project}/zones/{zone}/instanceGroups/{instanceGroup}/addInstances

`POST /projects/{project}/zones/{zone}/instanceGroups/{instanceGroup}/addInstances`

Adds a list of instances to the specified instance group.  All of the
instances in the instance group must be in the same network/subnetwork.
Read 
Adding instances for more information.

## Path parameters

- `project` string, required
- `zone` string, required
- `instanceGroup` string, required

## Query parameters

- `requestId` string

## Request body

- InstanceGroupsAddInstancesRequest
  - `instances` InstanceReference[] — The list of instances to add to the instance group.
    - `instance` string — The URL for a specific instance. @required compute.instancegroups.addInstances/removeInstances

## Response `200`

Successful response

---

[API](https://skmtc.net/google/apis/compute.md) · [All operations](https://skmtc.net/google/apis/compute/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/google/compute/revisions/6120ed8969d4/schema)